| 摘要 |
PURPOSE:To improve the workability of the titled device by forming integrally wires laid on both sides of scanning lines of both optical systems, setting up a pair of movable pulleys as pulleys for extending the wires and applying tension to the wires through respective supporting axes of the movable pulleys. CONSTITUTION:Since the pulleys 10, 11 in an optical system driving device 1 are movable, a margin is formed in the length of the wires at the time of laying the wires and wire laying work can be easily executed. Since tension can be applied to the supporting axes 16, 17 of the movable pulleys 10, 11 after laying the wires, both the optical systems 2, 3 can be efficiently driven, and since the tension is applied to the supporting axes 16, 17 especially through a common spring coil 29, uniform tension can be applied to the whole long wire 44. Although large shock is applied to both wire parts 12, 13 at the time of folded movement of 1st and 2nd optical systems 2, 3, the shock is efficiently absorbed or dispersed because the movable pulleys 16, 17 are kept at the played states.
|
